Its pretty funny that most people refer to someone as a newbie, hacker, or gosu(pro) by just looking at their records or even by their nick. Its bad to accuse - and please don't judge a book by its cover.
However, through my 6 years experiences in the Battle.net, I believe stats really show something about the players. Examples are shown below.
If you saw someone with stats like: -
8-27-2 = most probably this guy is really a newbie... either he have a new account (with his low games played) or he is really new to Battle.net. But anyway, he is really a newbie (very likely). My experience tell me that there are rarely good player with such stats.
286-275-23 = this guy is good. He will not be a newbie, and he can make a good team partner. The reason his stats is not so superb (like 377-72-27) is because he don't play in a team. Most of the game he played were with unknown partners, but he still wins against a team of friends.
4-2-10 = this guy is a disconnector. He got disconnected (droped) almost half of the game he played. He may be a good player but he got banned in lot of games due to his lagness. Consequences from that, he always create new accounts to show his "innocents". My advise - ban this guy as soon as possible though he show no sign of lag.
2342-863-192 = this guy is unargueably good, but may not be good enough to show whether he is a real pro. It is very likely most of the games he played were with friends. But if you ever seeing him playing without his friends, then I would say he is 90% a real pro BGH players.
354-14-7 = OK. He is really good. But you will never see him playing without his friends around. Got that? So you can't team with him until he knows that you are as good as him. If he join your game, better becareful before you press START... as he might leave once the game start. Reasons are his friends is not in the game, or he found out that the opponent teams are a group of friends (with good stats). His record means his life, so he want to be very sure he will win this or else, he leave.
272-3291-94 = What with those losses? Is he a newbie that lost almost all his games? Never happen in Battle.net. Nobody lost that much and win that little. With experience of over few thousand games in the Battle.net, this guy is never newbie now. The reasons why he have such loses is because he just quit it even when he wins. The reasons? Yes, there is reasons!
63-66-5 = Not much about this one. He may be very good as he has not partner with friends... but still wins.
1900-0-22 = He is not a comp stomper - even a stupid guy don't play that much with computers and wins all. He employs a "winbot" to help him with those wins. How about the 22 drops? Yeah, accidents happen - no electricity, broadband cut off, or his mum unplug the telephone line.
0-0-1000 = This guy simply don't exist.
That's it about "Stats Impressions". My analysis may not be true. However, if you like this short article, then follow me on as I will discuss on how to judge a player by just looking at his name in the next few days.